Develop Bugs

[Q] rooted m8 non responsive no lights no vibration black screen

I have an HTC One M8 AT&T unlocked, rooted, ARHD 34 installed.
The other day I used the phone until about 9 AM and when I pulled it out of my pocket the very next time there was no response. I tried Volume Up + Power, Volume Down + Power, and Volume UP +Volume Down + Power no response. Tried all three again with power cord attached and still nothing. finally after about the 20th try with power attached I got a charge light to light for about a full second but then it goes off immediately. This now happens every time I plug it in. sometimes it's a full second of the charge light others it just flashes on then off immediately.
I need some help, because I am not sure what is happening and I don't want to just tear it apart and throw parts at it. I am thinking the battery took a crap on me but I need someone else to confirm my suspicions.

tsamrein said:
I have an HTC One M8 AT&T unlocked, rooted, ARHD 34 installed.
The other day I used the phone until about 9 AM and when I pulled it out of my pocket the very next time there was no response. I tried Volume Up + Power, Volume Down + Power, and Volume UP +Volume Down + Power no response. Tried all three again with power cord attached and still nothing. finally after about the 20th try with power attached I got a charge light to light for about a full second but then it goes off immediately. This now happens every time I plug it in. sometimes it's a full second of the charge light others it just flashes on then off immediately.
I need some help, because I am not sure what is happening and I don't want to just tear it apart and throw parts at it. I am thinking the battery took a crap on me but I need someone else to confirm my suspicions.
Click to expand...
Click to collapse
Have you tried using a different charger? You can also check if there is a damage on you charging port.
Try using your charger to a different phone and if it works then there is a problem with your charging port. You may want try plugging in the charger to your M8 and try to move the cable near the port. If it works, then you must charge your phone in a specific position. The best thing to do is call HTC to process RMA.

[Q] WTF Happens. It's Dead.

Hi people . I'm desperate.
I have a Tab S T800 and i still did not know what happened .
I turned off the tablet and when i cam and get it to turn it on again ... nothing happened .
Since , i tried everything to turn it on .... All the combinations of buttons and etc. Home + Power + Vol up , Vol down + Home + Power, Power + Menu touch button, Plugged on PC , unplugged , on the original charger , on a parallel charger .....
And NOTHING has happened to the tablet ... the screen is black .... and the tablet did not fall , did not got wet , did not got overheated ....
What Could i do ? I have very important data in it and i can not lose ... The tablet still under warranty ....
I appreciate all the help.... and i already looked on the forum for solutions...i didn't found one at least that works...
Thank you all.
Sorry for my bad english...i'm Brazilian.

Nhave you plugged it into a wall charger for a good hour before trying to turn it on? Make sure battery has some charge.

Gustavo Ravagnani said:
Hi people . I'm desperate.
I have a Tab S T800 and i still did not know what happened .
I turned off the tablet and when i cam and get it to turn it on again ... nothing happened .
Since , i tried everything to turn it on .... All the combinations of buttons and etc. Home + Power + Vol up , Vol down + Home + Power, Power + Menu touch button, Plugged on PC , unplugged , on the original charger , on a parallel charger .....
And NOTHING has happened to the tablet ... the screen is black .... and the tablet did not fall , did not got wet , did not got overheated ....
What Could i do ? I have very important data in it and i can not lose ... The tablet still under warranty ....
I appreciate all the help.... and i already looked on the forum for solutions...i didn't found one at least that works...
Thank you all.
Sorry for my bad english...i'm Brazilian.
Click to expand...
Click to collapse
Try home+power+vol up+vol down and hold it for 1-2 minutes or until something happens? Try it also while it's plugged in.

DUHAsianSKILLZ said:
Try home+power+vol up+vol down and hold it for 1-2 minutes or until something happens? Try it also while it's plugged in.
Click to expand...
Click to collapse
Nothing happened....
One thing that i forgot to mention: The tablet gets hot when i leave it charging.

lynxblaine said:
Nhave you plugged it into a wall charger for a good hour before trying to turn it on? Make sure battery has some charge.
Click to expand...
Click to collapse
I let it there for at least four hours.

Gustavo Ravagnani said:
I let it there for at least four hours.
Click to expand...
Click to collapse
Does it still connect to a PC? If so you can back up all your data if it still connects

DUHAsianSKILLZ said:
Does it still connect to a PC? If so you can back up all your data if it still connects
Click to expand...
Click to collapse
It's attached, but not connected...if you know what i mean...
Pc didn't recognize the tablet... Tablet is completely dead.

Which of the steps suggested have you tried? in terms of holding the power + vol up + home button?

lynxblaine said:
Which of the steps suggested have you tried? in terms of holding the power + vol up + ho'me button?
Click to expand...
Click to collapse
1. Home + Vol up + Power.
2. Home + Vol down + power
3. Home + Vol down and Vol up + power.
4. Menu Touch button + Power.
And i did all this connected on PC, Disconnected, Connected on a original Wall Charger and on a parallel wall charger.

Do you even get the noise on the pc to detect that something is connected?

Gustavo Ravagnani said:
Hi people . I'm desperate.
I have a Tab S T800 and i still did not know what happened .
I turned off the tablet and when i cam and get it to turn it on again ... nothing happened .
Since , i tried everything to turn it on .... All the combinations of buttons and etc. Home + Power + Vol up , Vol down + Home + Power, Power + Menu touch button, Plugged on PC , unplugged , on the original charger , on a parallel charger .....
And NOTHING has happened to the tablet ... the screen is black .... and the tablet did not fall , did not got wet , did not got overheated ....
What Could i do ? I have very important data in it and i can not lose ... The tablet still under warranty ....
I appreciate all the help.... and i already looked on the forum for solutions...i didn't found one at least that works...
Thank you all.
Sorry for my bad english...i'm Brazilian.
Click to expand...
Click to collapse
Hi Gustavo,
Sorry I'm new member but may be able to help you with this.
I had a similar experience with my son's tab 3 kid's edition last year.
It just died and wouldn't turn on. I tried everything but no luck. I then decided to take the tablet back to samsung store and packed it. I was suppose to go the store 2 days later but after 48 hours of device dying I just thought of trying to turn it on and plugged it in to the wall charger.
To my surprise display came on showing red battery icon and after 30 mins approx, device showed green battery icon still charging. after roughly 10 hours I turned the device on and it works flawlessly since then.
Hope this helps.

lynxblaine said:
Do you even get the noise on the pc to detect that something is connected?
Click to expand...
Click to collapse
Not even a "BOOP."

panesaam said:
Hi Gustavo,
Sorry I'm new member but may be able to help you with this.
I had a similar experience with my son's tab 3 kid's edition last year.
It just died and wouldn't turn on. I tried everything but no luck. I then decided to take the tablet back to samsung store and packed it. I was suppose to go the store 2 days later but after 48 hours of device dying I just thought of trying to turn it on and plugged it in to the wall charger.
To my surprise display came on showing red battery icon and after 30 mins approx, device showed green battery icon still charging. after roughly 10 hours I turned the device on and it works flawlessly since then.
Hope this helps.
Click to expand...
Click to collapse
Hi! Thanks for the help! But before i make this topic i waited for 3 days to put tablet on a charger.... nothing happened =/ But i'm gonna try again!

I had a similar problem.
Do you know how to separate the screen from the body? I found that the connector at the base of battery was very loose. I managed to push it down and it turned on right after.
Hope this helps!

Whilst I agree it could be a loose connector, it would void your warranty. I would see about going to your local samsung repair centre and see if they can have a look without wiping.

This happend to my 8.4 last week, no way to revive but i can feel warm at the back while doing all the first aid trix but no luck. So i decided to bring it to the nearest samsung store w/repair service they remove the back cover and battery, they told me they just ¿¿refresh start?? the battery? because it was drained!!?? wtf i remeber i left it with 30% charge... but anyway they fixd it in less than an hour. But yesterday the symptom returnd again i have to power+down+home just to turn it on :/

Plug in the charger then press power + vol down (not up). Hold for a good while until it restarts.
If it doesn't then it could be hardware related.

With so many people reporting battery problems, you might just have a bad battery and that's why it gets hot when connected to a charger. *I* would open it and check the battery's connection and maybe even replace the battery.

I saw some videos...but i don't want to void warranty :/

ashyx said:
Plug in the charger then press power + vol down (not up). Hold for a good while until it restarts.
If it doesn't then it could be hardware related.
Click to expand...
Click to collapse
I'm gonna try this... but
How much is this "good while" ?

need help - M9 won't boot at all after a power down. Black screen of death.(Strange)

Need help /advice please
Im on M9 rooted,s-off, viperone 3.5 rom, supercid, firmware 2.10.401.xx and twrp 3.0.0.0. all fine beforehand.
I was planning to do firmware upgrade, so thought i better check the laptop connections first.( So I haven't done any firmware upgrade or rom change yet.) but..
heres what happened
(note - all was working fine last week, recovery, adb, reboot function were all ok.)
- Yesterday i connected my phone to laptop and my laptop suddenly was not detecting the phone (!). strange. it worked last week. (but the laptop was still able to charge the phone then). Tried different cables same thing. strange.
-so i thought its been ages since a power down. probably needs a proper shutdown and then clean reboot right?
-i shutdown the device using the power button. (I might have accidentally pressed the power button too long and forced a shut down - cant recall )
-but the device shutdown like normal and then just would not reboot. nothing. no charge light even when connected to charger now.
-I tried hard reset press all three (vol and power) buttons for 30seconds (up to 1minute) - nothing. phone still "black screen of death". wont boot. (tried vol up+power or vol down + power all no boot no nothing.) Never happened before. No idea what happened. Any ideas?
Any advice much appreciated

Try holding all three buttons for a couple of minutes while it's plugged into the charger.
If that doesn't work, leave it plugged in overnight. HTC phones can have these weird power issues where the phone appears to die, then comes back to life the next day.

iElvis said:
Try holding all three buttons for a couple of minutes while it's plugged into the charger.
If that doesn't work, leave it plugged in overnight. HTC phones can have these weird power issues where the phone appears to die, then comes back to life the next day.
Click to expand...
Click to collapse
OK I will try that. My battery was 90% charged before it died. but will try your suggestion and get back to you. hopefully my M9 is not irrecoverable....
{edit}[Update]
When I plugged into charger the charge light does not go on.
but i tried hold all three buttons while in charger, the charge light did begin blinking on and off times, but no reboot.
(i tried that over 10 times, holding upto 3 or 4 mintues till my fingers turned white, sadly no reboot.)
So I left it plugged into charger overnight but same this morning.
Any idea what it could be? I was rooted, S-off and unlocked bootloader so my warranty is history anyway.
Appreciate any ideas/advice. tia.

Having power issues as well..starting to think this m9 is a piece of junk..3 of my USB chargers stopped working on my m9 (they worked before)..one charges on and off very slowly.

ya my M9 just died and still would not boot. So strange, because it was almost all was fine beforehand. it was just it suddenly could not link to my laptop. and after a power down just died.
So after hours and hours of holding all three buttons while charging, not able to boot for days, and leaving charged for nights and no boot...I gave up. Took my phone to HTC service. They said it might take a month and I have no warranty. not happy with this at all and very confused. My guess is it could be the Power IC or some capacitor that just died. No idea. Makes me begin question quality of the M9. I saw a few guys on youtube comments say same thing. Their M9 after shut down would'nt reboot. So its not just me at least.

I saw this same thing happen on the M7. Some weird power/battery gremlins. Annoying they haven't fixed it.

after 5 months of my phone in and out of different HTC services they could not fix my phone power issue and seems they gave up and
replaced with new phone.
so almost 5 months I had no M9. . the power issue really disappointed me.

Phone suddenly switched off. Dead, not charging, orange led blinking.

Hello all,
I have a htc desire 820 single sim. I had absolutely no problems with baterry etc.. This phone has only 4 months - i didnt put it into water.
I have unlocked bootloader and rooted my phone 3 weeks ago but it was running with no problems. I didnt install any aggressive software that may brick the phone. I just wanted to get access to all files.
So two days ago in the evening i just installed Skype app and wanted to download a file sent by my friend then in the moment that i was downloading my phone suddenly went off - just like there was no batterry etc (i remember it was more than 30% of batterry). I couldn't turn it on - 0 react. I tried to charge him - the orange led is blinking with 1 sec frequency. I left this phone overnight and still nothing - now its 2nd day that its charging and still nothing. I doubt it was a virus becouse i recieved this file on other phone without any problems.
I tried:
-volume buttons - booting in loader = nothing
-plenty chargers, cables = nothin
-charging via pc usb = nothing
-phone is not detected in pc after i connect it (just orange led blinking)
My question is, what actually happened? What else could i do to try to unbrick my phone?
The day before it got bricked i accidently let it fall down on the ground but frim 40cm distance (i have a silicone cover around) = but i didnt notice anything after falldown.
Thank You for any advices.

I think it's battery problem. I had something similar with One X. You can try leave your phone plugged in to charger (try every micro-usb charger that you have in home) for a night. LED should turn green, if not I recommend send it to htc for battery change or to "professional service" in your city Good luck!

Tighten two volume buttons and the power button when you see a black screen and holding down the volume- and power button that would go to bootloader.Telefon must be connected to kompyuteru

Im trying plenty chargers and cables at the moment - for now= 0 results @vuk1963 i tried your method but 0 react from the phone - just like before.. totally dead- just this god damn blinking orange led..
Edit:
WOW... my phone is alive!! All i did now was:
I tried charger from my galaxy core (same amperage like htc 820 = 1A) but i used original cable from my htc charger. The led was still blinking so i decided to "knock" the back panel (around the place where connector from batterry is), then i pressed vol+ and vol- and power button for around 20-30s, then i pressed vol- and power button for around 30s then i released everything, then i pressed power button for 10sec and my phone turned on!!! im so happy! my phone is still on warranty but i live abroad now so i need to send it to my country to start warranty procedure but no im free of this!
Thank You guys for pushing me to try once more the magical tricks with cables, chargers and buttons
Btw.
My batterry is now 100% = that means it was charging all the time?
i don't know what was that but i am happy that it work now.
Thank You guys!

The phone was overheating and it stopped!
Leaving it for a while, then the combination of buttons did the trick.
Great to hear.

Send it back to htc, mine had the same problem. There is no way they will find out u are unlocked or rooted since it wont start. The problem is the motherboard failed. I got mine back with the motherboard replaced.

Daughters phone is completely dead, will not switch on. Please help

I have had it plugged in all night, and tried the following ;
Hold power for 1 minute
Hold power and volume up for one minute
Hold power and volume down for one minute
Hold all 3 buttons for one minute
None of these worked.
I have plugged it into a PC but there is no connection.
Is there anything else I can do?
*EDIT* Fixed it! https://forum.xda-developers.com/showpost.php?p=83649851&postcount=7

Its dead phone. What do you want some magic to turn it on? If it dosnt want to turn it on its dead phone and you cant do anything about it.

You might be right, but in the 20 years of owning mobile phones I have never had one that simply "died" before. I've ordered a new charge port as I think it might be to blame.

TylerDurdenK said:
You might be right, but in the 20 years of owning mobile phones I have never had one that simply "died" before. I've ordered a new charge port as I think it might be to blame.
Click to expand...
Click to collapse
Pressing pwr + volume down or volume up won't turn on device.
You're not saying if device can enter to recovery nor fastboot or If your device is unlocked or not or if you have some screen as the logo or if you have some vibration, some led blinking, or if you let it charging with screen on (it must be screen burning) or if device was off while charging...

The phone has no sign of life. No led, no screen on. Nothing.

TylerDurdenK said:
The phone has no sign of life. No led, no screen on. Nothing.
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Click to collapse
Well, there is not much you can do here, it could be a damage at the hardware level, probably in the port charger or at emmc/motherboard.
Also the overcharging or the kernel panic produced for some overheating can make that device won't boot.
The only you should try at software level is this https://c.mi.com/thread-1479882-1-0.html

I fixed it! After replacing the charging port it still didn't work.
However I read somewhere that disconnecting then reconnecting the battery connector inside the phone would work so I tried that and it worked.
Phone back working fully.